Electronic device

Abstract

An electronic device, comprising a housing, a feed network, and a circuit board. An accommodating cavity is provided on the housing, and a feed post and a ground post are integrally formed in the accommodating cavity. The feed network is connected to the feed post and is used for feeding power to the accommodating cavity. A ground end of the circuit board is connected to the ground post and is used for releasing static electricity on the accommodating cavity. In the present application, by reusing at least part of an area of the accommodating cavity on the electronic device as a radiator, the occupation of a space in the electronic device can be greatly reduced, and good antenna efficiency can be obtained. The feed post and the ground post can be integrally formed in the accommodating cavity during processing and manufacturing, thereby ensuring the continuity of a structure, and avoiding generation of connection gaps between the accommodating cavity, the feed post, and the ground post that affects the distribution of antenna resonance. In addition, by connecting the ground post on the accommodating cavity with the ground end on the circuit board, the static electricity on the accommodating cavity can be conducted to the ground end of the circuit board by means of the ground post in a timely manner and released.

Description

electronic devices

[0001] This invention claims priority to the Chinese patent application filed with the State Intellectual Property Office on December 13, 2023, with application number 202311710584.7 and application name “Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to an electronic device. Background Art

[0003] Antennas are devices used to transmit and receive electromagnetic waves and are widely used in electronic products such as mobile phones. Antennas covering different operating frequency bands require different dimensions. For example, L5 antennas operate at lower frequencies, have longer wavelengths, and exhibit less free-space attenuation than L1 antennas. However, due to the compact size of mobile phones, L5 antennas are larger, making it difficult to design high-performance L5 antennas within this limited space.

[0004] Summary of the Invention

[0005] In view of this, the present application provides an electronic device to realize the design of an L5 antenna with better performance within the limited space of the electronic device.

[0006] An embodiment of the present application provides an electronic device comprising a housing, a feed network, and a circuit board. The housing is provided with a housing cavity, at least a portion of which is provided with a metal layer. A feed post and a ground post are integrally formed in the housing cavity, and the feed post and the ground post are electrically connected to the metal layer. The feed network is connected to the feed post and is used to feed power to the metal layer via the feed post. A ground terminal of the circuit board is electrically connected to the ground post to discharge static electricity from the metal layer.

[0007] In the present application, by reusing the metal layer of the accommodating cavity on the electronic device as a radiator, the space occupied by the electronic device can be greatly reduced, that is, the design of the L5 antenna can be realized within the limited space of the electronic device. At the same time, the L5 antenna composed of the metal layer of the reused accommodating cavity is an independent antenna, which does not need to share the radiator with other antennas. The L5 antenna can obtain good antenna efficiency and has better radiation performance. Among them, the accommodating cavity can be integrally formed with the feeding post and the grounding post during the processing and manufacturing process, so that the accommodating cavity including the feeding post and the grounding post forms an integral structure, thereby ensuring the continuity of the structure and avoiding the generation of connection gaps at the electrical connection parts between the accommodating cavity, the feeding post and the grounding post, which affects the distribution of the antenna resonance, and is conducive to configuring an antenna with expected performance and achieving the expected radiation effect. At the same time, the accommodating cavity, the feeding post and the grounding post are integrally formed, which can realize the miniaturization of the antenna structure, ensure the reliability of the structure, and facilitate assembly to the shell. In addition, by connecting the grounding column connected to the metal layer to the grounding end on the circuit board, the static electricity on the metal layer can be promptly conducted to the grounding end of the circuit board through the grounding column for release, thereby ensuring the normal operation of the camera module and improving the user experience.

[0008] In one possible design, the electronic device further includes a first matching circuit, through which the ground post is electrically connected to the ground terminal. The first matching circuit is a circuit associated with adjusting the radiation characteristics of the antenna. In one embodiment, the first matching circuit has impedance matching and / or frequency tuning functions. More importantly, in this application, the first matching circuit can improve the effect of static electricity discharge to ground by matching impedance.

[0009] In one possible design, the first matching circuit includes a first metal member, one end of which is connected to a grounding post, and the other end of which is electrically connected to a ground terminal. This first metal member can be equivalent to an inductor, thereby meeting antenna performance requirements while also dissipating static electricity.

[0010] In one possible design, the first metal member includes a first connecting segment, a second connecting segment, and an extension segment. The two ends of the extension segment are respectively connected to the first end of the first connecting segment and the first end of the second connecting segment, forming a C-shape for the first metal member. The second end of the first connecting segment is connected to the grounding post, and the second end of the second connecting segment is connected to the ground terminal. A first metal member with this structure occupies a smaller space while allowing for a longer physical length between the grounding post and the ground terminal, enabling configuration of an inductance that meets antenna performance requirements and electrostatic discharge requirements.

[0011] In one possible design, the first matching circuit includes a capacitor and / or an inductor and / or a radio frequency switch. The specific circuit configuration of the first matching circuit can be designed based on antenna performance requirements and electrostatic discharge requirements, thereby making the antenna design more flexible.

[0012] In one possible design, the electronic device further includes a second matching circuit, through which the feed post is connected to the feed network. The second matching circuit is associated with adjusting the antenna's radiation characteristics. In one embodiment, the second matching circuit can have similar functions to the first matching circuit, namely, impedance matching and / or frequency tuning.

[0013] In one possible design, the second matching circuit includes a second metal member, one end of which is connected to the feed post, and the other end of which is connected to the feed network. This integrated metal sheet has a predetermined length perpendicular to the thickness of the electronic device. This allows for a transition between the feed post and the feed network, where a significant distance makes a direct and effective connection difficult. This allows for greater flexibility in the design of the feed post and feed network positions, meeting the structural layout requirements of various electronic devices.

[0014] In one possible design, the second matching circuit includes a capacitor and / or an inductor and / or a radio frequency switch. This second matching circuit can have a similar structure to the first matching circuit. Specifically, the capacitor, inductor, or radio frequency switch can be configured according to the feeding and radiation requirements of the antenna. For example, the capacitor or inductor can be configured separately, or the capacitor and inductor can be configured at the same time and connected in series or in parallel. A radio frequency switch can also be used. The radio frequency switch can include multiple branches, each of which can be configured with a capacitor or inductor and can be connected to the circuit through a switch. This embodiment does not impose specific restrictions on this, so that the antenna design has strong flexibility.

[0015] In one possible design, multiple grounding posts are provided, with spacing therebetween. The multiple grounding posts can be distributed at different locations on the metal layer, thereby enabling static discharge at different locations on the metal layer. In some embodiments, the positions of the grounding posts can be specifically set based on the static distribution on the metal layer.

[0016] In one possible design, the grounding post includes a first grounding post and a second grounding post, the distance between the first grounding post and the feeding post is smaller than the distance between the second grounding post and the feeding post, and the equivalent inductance value of the first grounding post is greater than the equivalent inductance value of the second grounding post. Among them, the static electricity distribution near the feeding post is relatively strong, so the intensity of the static electricity distribution near the first grounding post is greater than the intensity of the static electricity distribution near the second grounding post, and the stronger the static electricity distribution is, the larger the equivalent inductance value of the grounding post needs to be, so that the static electricity with relatively large intensity can be effectively conducted to the ground through the grounding post, thereby achieving effective static electricity release. Therefore, in the embodiment of the present application, by making the equivalent inductance value of the first grounding post greater than the equivalent inductance value of the second grounding post, the static electricity in the area where the static electricity distribution is relatively concentrated can be effectively released to the ground, thereby ensuring the normal operation of the camera module.

[0017] In one possible design, the equivalent inductance of the first matching circuit is less than 30nH, and the equivalent inductance of the second matching circuit is less than 5nH. When the equivalent inductance of the first and second grounding posts falls within the above ranges, static discharge can be achieved in most electronic devices at the metal layer within the housing cavity, such as the metal decorative part of the camera.

[0018] In one possible design, one end of the first metal member is electrically connected to the first grounding post. The first metal member can be equivalent to an inductor element, thereby meeting the antenna performance requirements while also meeting the need for electrostatic discharge through the cooperation between the first metal member and the first grounding post.

[0019] In one possible design, the electronic device also includes a metal spring, and the second grounding post is connected to the grounding end through the metal spring, thereby ensuring the reliability of the connection between the second grounding post and the circuit board, and at the same time facilitating the improvement of the electrostatic discharge effect through the cooperation between the metal spring and the second grounding post.

[0020] In one possible design, the accommodating cavity includes a main body and a flange, and the flange is connected to the edge of the main body in a circumferential direction of the main body. The flange is connected to the shell, and the main body protrudes from the surface of the shell away from the accommodating cavity. A metal layer is provided on the surface of the main body close to the shell. A space that can accommodate devices can be enclosed between the main body and the flange. For example, at least part of the camera module can be accommodated in this space. That is to say, in some embodiments, the accommodating cavity with the above structure can constitute a metal decorative part of the camera, which can be used to protect and decorate the camera. At the metal decorative part of the camera, the electronic device has a relatively large space in the thickness direction, and the space can be used to arrange structures such as the feeding post and the grounding post of the antenna without developing additional space in the electronic device, which is conducive to the design of a larger antenna within the limited space of the electronic device.

[0021] In one possible design, the body is made of metal, and the metal layer is the surface of the body closest to the shell. In other words, the entire body can act as a radiator to radiate energy. Furthermore, the flange can also be made of metal, and the flange and body can be integrally formed, forming a metal cavity. Of course, in some embodiments, the flange can also be made of non-metallic materials such as plastic.

[0022] In one possible design, the body is made of plastic, and the metal layer is a metal sheet, which is fixed to the surface of the body near the shell. The metal layer can be a thin metal sheet with good conductivity, such as a copper sheet, and can be fixed to the body through a surface mounting method. In some embodiments, the metal layer can also be formed on the surface of the body near the shell through a process such as electroplating. In addition, the flange can also be made of the same material as the body, so that the body and flange can be integrally formed, facilitating processing and manufacturing.

[0023] In one possible design, the housing cavity is a metal decorative element for the camera, which is provided with a camera hole. The metal decorative element for the camera can be used to protect and decorate the camera. The electronic device has a relatively large space in the thickness direction at the camera decorative element. This space can be used to arrange antenna structures such as the feed post and ground post, eliminating the need for additional space within the electronic device. This facilitates the design of a larger antenna within the limited space of the electronic device.

[0024] In one possible design, the center frequency of the radio frequency signal fed by the feeding network to the metal layer through the feeding post is 1.17 GHz. That is to say, the feeding network can feed the radio frequency signal of the L5 (center frequency is 1.17 GHz) band into the accommodating cavity through the feeding post, so that the metal layer constitutes the radiator of the L5 antenna. Therefore, by reusing the metal layer of the accommodating cavity on the electronic device as a radiator, the space occupied by the electronic device can be greatly reduced, that is, the design of the L5 antenna can be realized within the limited space of the electronic device. At the same time, the L5 antenna constituted by the metal layer of the reused accommodating cavity is an independent antenna and does not need to share the radiator with other antennas. The L5 antenna can obtain good antenna efficiency and has better radiation performance.

[0025] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] FIG1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0028] FIG2 is a side view of an electronic device provided in an embodiment of the present application;

[0029] FIG3 is a partial cross-sectional view at point A in FIG2 ;

[0030] FIG4 is a bottom view of the accommodating cavity provided in an embodiment of the present application;

[0031] FIG5 is a side view of the accommodating cavity provided in an embodiment of the present application;

[0032] FIG6 is a top view of a first metal member provided in an embodiment of the present application;

[0033] FIG7 is a schematic structural diagram of a first matching circuit provided in an embodiment of the present application;

[0034] FIG8 is a top view of a second matching circuit provided in an embodiment of the present application.

[0035] Reference numerals:

[0036] 1- shell;

[0037] 2-accommodation cavity;

[0038] 21-Ontology;

[0039] 22-Flanging;

[0040] 23-feeding column;

[0041] 24- grounding column;

[0042] 241-first grounding column;

[0043] 242-second grounding column;

[0044] 25- camera hole;

[0045] 3-first matching circuit;

[0046] 31- first metal member;

[0047] 311-Extension;

[0048] 312-first connecting section;

[0049] 313-second connecting section;

[0050] 4- second matching circuit;

[0051] 5- Circuit board;

[0052] 6-Camera module. DETAILED DESCRIPTION

[0053] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0054] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0055] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0056] It should be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the associated objects.

[0057] In the description of this application, unless otherwise specified or limited, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0058] Antennas are devices used to receive / transmit electromagnetic waves and are widely used in electronic products such as mobile phones. For antennas covering different operating frequency bands, the antenna sizes are also different. For example, the L5 (center frequency is 1.17GHz) antenna has a lower frequency, longer wavelength, and less free-space attenuation than the L1 (center frequency is 1.57GHz) antenna, but the size of the L5 antenna is also relatively larger. In small electronic products such as mobile phones, due to the more compact space inside the mobile phone, the L5 antenna size is larger, making it difficult to design an L5 antenna with good performance within the limited space. In order to arrange the L5 antenna in an electronic device, it is generally considered to design the L5 antenna and other antennas into a co-body antenna. For example, the L5 antenna can be designed into a co-body form with the MHB (1.7GHz~2.7GHz) antenna, that is, the L5 antenna and the MHB antenna share a radiator, or the L5 antenna serves as a radiating branch of the MHB antenna. Although this design can reduce the overall length of the antenna, it will seriously affect the antenna efficiency of the L5 antenna and reduce the antenna's radiation performance.

[0059] To this end, an embodiment of the present application provides an electronic device, which may be a mobile phone, a tablet computer, a laptop computer, a smart home, a smart bracelet, a smart watch, a smart helmet, smart glasses, etc. The electronic device may also be a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, an electronic device in a 5G network, or an electronic device in a future-evolved public land mobile network (PLMN), etc., and the embodiment of the present application is not limited to this. Figure 1 exemplarily shows the electronic device provided in an embodiment of the present application, and the electronic device is illustrated as a mobile phone.

[0060] As shown in Figure 2, it is a side view of the electronic device provided by an embodiment of the present application. Figure 3 is a partial cross-sectional view at point A in Figure 2. Referring to Figures 2 and 3, the electronic device provided by an embodiment of the present application includes a housing 1, a feeding network and a circuit board 5. Among them, the housing 1 can be the outermost shell part exposed on the electronic device, which can be directly touched by the user. For example, for the electronic device being a mobile phone, the housing 1 can be a structural member such as a battery cover and a back shell. The housing 1 can be a metal material, or of course a plastic material with a certain hardness, which can protect and support the numerous components inside the electronic device.

[0061] 3 , a housing 1 is provided with a housing cavity 2, and at least a portion of the housing cavity 2 is provided with a metal layer. In some embodiments, the housing cavity 2 can be a non-enclosed cavity structure enclosed by a metal material, so that the housing cavity 2 constitutes a metal cavity, and the metal layer is at least a portion of the inner surface of the housing cavity 2. In some embodiments, the housing cavity 2 can also be a non-enclosed cavity structure enclosed by a non-metallic material such as plastic, and the metal layer can be a metal sheet structure that can be fixed to at least a portion of the inner surface of the housing cavity 2. The inner surface of the housing cavity 2 is the surface of the housing cavity 2 facing the housing 1. The housing cavity 2 can be an independently processed part that can be assembled to the housing 1. Alternatively, the housing cavity 2 can also be a structure integrally formed with the housing 1. For example, for an electronic device with a camera function, the housing cavity 2 can be a metal decorative part of a camera mounted on the housing 1. The metal decorative part of the camera can play a protective and decorative role for the camera module 6. Generally speaking, there is a certain space inside the metal decorative part of the camera, and at least a portion of the camera module 6 can be accommodated in this space. Among them, a camera hole 25 can be set on the camera metal decorative part, and the camera in the camera module 6 can correspond to the camera hole 25 for taking pictures.

[0062] Among them, the metal layer of the accommodating cavity 2 can be used as the radiator of the antenna to receive / transmit electromagnetic waves. Referring to Figure 3, a feeding post 23 and a grounding post 24 can be integrally formed on the accommodating cavity 2. The feeding post 23 is connected to the feeding network. The feeding network may include a power divider, a phase shifter, a coupler, a filter, etc. to achieve functions such as impedance matching, amplitude phase control, and harmonic suppression. The metal layer can be fed through the feeding post 23. In the embodiment of the present application, the feeding network can feed the RF signal of the L5 (center frequency is 1.17GHz) band into the accommodating cavity 2 through the feeding post 23, so that the metal layer of the accommodating cavity 2 constitutes the radiator of the L5 antenna. Thus, by reusing the metal layer of the accommodating cavity 2 on the electronic device as a radiator, the space occupied by the electronic device can be greatly reduced, that is, the design of the L5 antenna can be realized in the limited space of the electronic device. At the same time, the L5 antenna composed of the metal layer of the accommodating cavity 2 is an independent antenna. There is no need to share the radiator with other antennas. The L5 antenna can obtain good antenna efficiency and has better radiation performance. In addition, the feeding network can also feed radio frequency signals of other frequency bands into the metal layer, so that the metal layer can constitute an antenna that can cover other working frequency bands, which is not limited in this embodiment.

[0063] The accommodating cavity 2 can be integrally formed with the feed post 23 and the ground post 24 during the manufacturing process, so that the accommodating cavity 2 including the feed post 23 and the ground post 24 forms an integral structure, thereby ensuring the continuity of the structure and avoiding the generation of connection gaps at the electrical connection points between the accommodating cavity 2, the feed post 23, and the ground post 24, which would affect the distribution of antenna resonance. This is conducive to configuring an antenna with the expected performance and achieving the expected radiation effect. At the same time, the integral molding of the accommodating cavity 2, the feed post 23, and the ground post 24 can achieve the miniaturization of the antenna structure, ensure the reliability of the structure, and facilitate assembly onto the housing 1.

[0064] In some embodiments, as described above, the accommodating cavity 2 can be a metal decorative part of the camera, and the radiator can reuse the metal decorative part of the camera. This will cause the metal decorative part of the camera to generate large static electricity in certain application scenarios such as dry environment and frictional charging. If the static electricity cannot be released in time, it will cause great damage to the camera module 6, and will also cause discomfort to the user, affecting the user experience.

[0065] To this end, referring to Figure 3, the grounding terminal of the circuit board 5 provided in this embodiment needs to be connected to the grounding post 24, so that the static electricity on the metal layer can be timely conducted to the grounding terminal of the circuit board 5 through the grounding post 24 for release, so as to ensure the normal operation of the camera module 6 and improve the user experience. In some embodiments, the circuit board 5 can be a printed circuit board (PCB), such as an 8-layer, 10-layer or 12 to 14-layer board having 8, 10, 12, 13 or 14 layers of conductive material, or an element separated and electrically insulated by a dielectric layer or insulating layer such as glass fiber, polymer, etc. In one embodiment, the circuit board 5 includes a dielectric substrate, a ground layer and a wiring layer, wherein the ground layer is the aforementioned grounding terminal, and the ground layer can specifically be a ground return signal line arranged in the circuit board 5, and the wiring layer and the ground layer are electrically connected through vias. In one embodiment, components such as a display, a touch screen, input buttons, a transmitter, a processor, a memory, a battery, a charging circuit, and a system-on-chip (SoC) structure can be mounted on or connected to the circuit board 5, or electrically connected to the wiring layer and / or ground layer in the circuit board 5. For example, an RF source is provided in the wiring layer. In some embodiments, the RF source can be an RF signal line, i.e., an input or output signal line extending from the circuit board 5 through the chip port. The RF signal line can be a signal line for transmitting RF signals in the L5 frequency band and can be electrically connected to the feed post 23.

[0066] In some embodiments, referring to FIG3 , the accommodating cavity 2 may include a body 21 and a flange 22, wherein the flange 22 may be connected to the edge of the body 21 in a circumferential direction. In some embodiments, the flange 22 and the housing 1 may be connected by welding, hot melt, or other processes, or may be integrally formed. The end of the flange 22 away from the body 21 may be connected to the housing 1, and the body 21 may protrude from the surface of the housing 1. A metal layer may be provided on the surface of the body 21 near the housing 1. A space that can accommodate a device may be enclosed between the body 21 and the flange 22. For example, at least a portion of the camera module 6 may be accommodated in this space. That is, in some embodiments, the accommodating cavity 2 having the above structure may constitute a metal decorative part for a camera, which can be used to protect and decorate the camera. At the metal decorative part for the camera, the electronic device has a relatively large space in the thickness direction. This space can be used to arrange structures such as the antenna feed post 23 and the ground post 24, without the need to develop additional space within the electronic device, thereby facilitating the design of a larger antenna within the limited space of the electronic device.

[0067] In some embodiments, the main body 21 can be made of metal material, and the surface of the main body 21 close to the shell 1 can be a metal layer. That is to say, the main body 21 as a whole can be used as a radiator to realize energy radiation. In addition, the flange 22 can also be made of metal material, and the flange 22 and the main body 21 can be formed as one piece. For example, the flange 22 and the main body 21 can be formed by bending or stamping a metal plate, a metal sheet or other materials, so that the accommodating cavity 2 enclosed by the main body 21 and the flange 22 is formed into a metal cavity. In the embodiment of the present application, the grounding post 24 and the feeding post 23 can be connected to the flange 22 or the main body 21. The feeding post 23 and the grounding post 24 can be flexibly arranged on the flange 22 or the main body 21 according to the actual structural layout of the electronic device, the performance requirements of the antenna and the requirements of electrostatic discharge. In some embodiments, the main body 21 serves as the radiator of the antenna, and the feeding post 23 and the grounding post 24 can be directly connected to the main body 21, so that the feeding post 23 can directly feed the main body 21, and the grounding post 24 can release the static electricity on the main body 21.

[0068] In some embodiments, the body 21 may be made of plastic, and the metal layer may be a metal sheet, which may be fixed to the surface of the body 21 near the housing 1. The metal layer may be a thin metal sheet with good conductivity, such as a copper sheet, and may be fixed to the body 21 via surface mount technology (SMT). In some embodiments, the metal layer may also be formed on the surface of the body 21 near the housing 1 via processes such as electroplating. Furthermore, the flange 22 may be made of the same material as the body 21, allowing the body 21 and flange 22 to be integrally formed, facilitating processing and manufacturing.

[0069] In an embodiment of the present application, the metal layer on the accommodating cavity 2 may have a relatively large area. The distribution of static electricity may be different at different positions of the metal layer. Therefore, the area where static electricity is distributed needs to release the static electricity through the grounding column 24. As shown in Figure 4, there is a bottom view of the accommodating cavity 2 provided in an embodiment of the present application, and Figure 5 is a side view of the accommodating cavity 2 provided in an embodiment of the present application. With reference to Figures 4 and 5, there may be multiple grounding columns 24, and the multiple grounding columns 24 may be distributed at intervals. Among them, there may be two, three, four or more grounding columns 24, and the multiple grounding columns 24 may be distributed in different position areas on the metal layer, so as to achieve the release of static electricity at different positions of the metal layer. In some embodiments, the position of the grounding column 24 may be set specifically according to the position of the static electricity distribution on the metal layer.

[0070] In some embodiments, referring to both Figures 4 and 5, the grounding post 24 may include a first grounding post 241 and a second grounding post 242. The distance between the first grounding post 241 and the feed post 23 may be smaller than the distance between the second grounding post 242 and the feed post 23, and the equivalent inductance of the first grounding post 241 is greater than the equivalent inductance of the second grounding post 242. While providing the first and second grounding posts 241, 242 can achieve electrostatic discharge, this can also affect antenna performance. Therefore, it is necessary to configure the equivalent inductance of the first and second grounding posts 241, 242 to balance both the electrostatic discharge function and antenna performance. In this embodiment of the present application, making the first grounding post 241 closer to the feed post 23 equivalent to a larger inductor can increase the antenna's radiation aperture, thereby achieving both electrostatic discharge and excellent antenna radiation performance. Making the second grounding post 242 farther from the feed post 23 equivalent to a smaller inductor can achieve electrostatic discharge without affecting antenna performance. Thus, by configuring the equivalent inductance values ​​of the first grounding post 241 and the second grounding post 242, both the electrostatic discharge function and the antenna performance are achieved. Therefore, in the embodiment of the present application, by making the equivalent inductance value of the first grounding post 241 greater than the equivalent inductance value of the second grounding post 242, static electricity in areas where static electricity is relatively concentrated can be effectively discharged to the ground, ensuring the normal operation of the camera module 6.

[0071] In some embodiments, referring to FIG5 , the ends of the first grounding post 241 and / or the second grounding post 242 away from the body 21 can be connected to the circuit board via a first matching circuit. The matching circuit connected to the first grounding post 241 and the matching circuit connected to the second grounding post 242 can be the same or different, and can be matched based on actual grounding and electrostatic discharge requirements.

[0072] In some embodiments, the electronic device may include a first matching circuit, and the grounding post 24 may be connected to the ground terminal via the first matching circuit. The first matching circuit may include a first metal member 31. For example, FIG6 shows a top view of the first metal member 31 provided in an embodiment of the present application. Referring to FIG6 , the first metal member 31 may be a sheet-like metal structure, such as a copper sheet, having good electrical conductivity. The first metal member 31 may be an integrally formed metal sheet.

[0073] In some embodiments, for ease of explanation, using the first grounding post 241 shown in FIG5 as an example, one end of the first metal member 31 can be connected to the first grounding post 241, and the other end of the first metal member 31 can be connected to a ground terminal on a circuit board. The first metal member 31 can be equivalent to an inductor, thereby meeting the antenna performance requirements while also dissipating static electricity.

[0074] In some embodiments, the electronic device may further include a metal spring (not shown in the figure), and the first metal member 31 may be electrically connected to the circuit board via a metal spring or a metal connector such as a screw, thereby ensuring the reliability of the electrical connection between the first metal member 31 and the circuit board. Of course, in other embodiments, the metal spring may be replaced by a metal connector such as a screw, which not only has the function of fastening the connection but also has good electrical conductivity.

[0075] In some embodiments, the first metal member 31 may also be electrically connected to the first grounding post 241 via metal connectors such as the aforementioned metal springs or screws, thereby ensuring the reliability of the electrical connection between the first metal member 31 and the first grounding post 241. In some embodiments, the first metal member 31 may not be connected to the circuit board for grounding, but may be connected to a grounding metal bracket in an electronic device such as a mobile phone for grounding.

[0076] In some embodiments, referring to FIG6 , the first metal member 31 may include a first connecting segment 312, a second connecting segment 313, and an extension segment 311. For ease of illustration, the ends of the first and second connecting segments 312, 313 along their lengths may be defined as first and second ends, respectively. The ends of the extension segment 311 are connected to the first and second ends of the first and second connecting segments 312, 313, respectively, giving the first metal member 31 a C-shape. The second end of the first connecting segment 312 is connected to the first grounding post 241, and the second end of the second connecting segment 313 is connected to the ground. The second ends of the first and second connecting segments 312, 313 are not connected to the extension segment 311. This structure of the first metal member 31 can minimize space requirements while providing a greater physical length between the first grounding post 241 and the ground, enabling the configuration of an inductance that meets antenna performance and electrostatic discharge requirements. The first metal member 31 can be integrally formed, facilitating its fabrication, ensuring structural reliability, and facilitating assembly and connection.

[0077] In some embodiments, the first matching circuit may further include a matching network composed of components such as capacitors and / or inductors and / or radio frequency switches. Referring to Figure 7, optionally, referring to Figure 7(a), the matching network may include a capacitor, and the capacitor may be connected in parallel between the grounding post 24 and the grounding terminal of the circuit board 5. Optionally, referring to Figure 7(b), the matching network may include an inductor, and the inductor may be connected in series between the grounding post 24 and the grounding terminal of the circuit board 5. Optionally, the matching network may include a capacitor and an inductor, and referring to Figure 7(c), the capacitor and the inductor may be connected in series; referring to Figure 7(d), the capacitor and the inductor may also be connected in parallel and connected between the grounding post 24 and the grounding terminal of the circuit board 5 in a corresponding series or parallel manner. Optionally, the matching network may also use a radio frequency switch, and the radio frequency switch may include multiple branches, each branch may be configured with a capacitor or an inductor, and may be connected to the circuit by switching.

[0078] The matching network composed of the aforementioned capacitors and / or inductors and / or radio frequency switches and other components can be integrated on the circuit board 5. In some embodiments, the matching network can be soldered on the circuit board 5, and one end of the matching network is connected to the ground terminal of the circuit board 5, and the other end of the matching network can be electrically connected to the corresponding grounding post 24 via a metal connector such as a metal spring or a screw.

[0079] As previously described, the grounding posts 24 may include multiple elements, such as the first grounding post 241 and the second grounding post 242 described above, or other elements with both grounding and electrostatic discharge functions. Each grounding post may be configured with a corresponding capacitor, inductor, and / or RF switch based on actual conditions. The specific configuration of the first matching circuit may be designed based on antenna performance requirements and electrostatic discharge requirements, thereby providing greater flexibility in antenna design.

[0080] In some embodiments, the aforementioned first metal member 31 can also be used in combination with the aforementioned matching network. The matching network can be soldered to the circuit board 5, with one end of the circuit electrically connected to the ground terminal on the circuit board 5, and the other end of the circuit electrically connected to the first metal member 31 via a metal connector such as the aforementioned metal spring or screw. It should be noted that the electrical connection between the first metal member 31 and the first grounding post 241 is described in the relevant description of other embodiments of this application and will not be repeated here.

[0081] Furthermore, the second grounding post 242 can be connected to the circuit board 5 in a manner similar to the aforementioned connection between the first grounding post 241 and the circuit board 5. Specifically, the second grounding post 242 can also be configured with a corresponding first matching circuit, so that the second grounding post 242 is connected to the corresponding matching circuit via a metal connector such as a metal spring or screw. Furthermore, in some embodiments, the second grounding post 242 can be directly electrically connected to a ground terminal of the circuit board or a grounded metal bracket in an electronic device such as a mobile phone via a metal spring or metal connector to achieve grounding, without requiring a corresponding matching circuit.

[0082] In addition, for the second grounding post 242 , the connection method between the second grounding post 242 and the circuit board 5 may be similar to the connection method between the first grounding post 241 and the circuit board 5 , and will not be repeated here.

[0083] In some embodiments, the second grounding post 242 may be connected to the ground terminal of the circuit board 5 via a metal spring, thereby ensuring the reliability of the connection between the second grounding post 242 and the circuit board 5 and improving the electrostatic discharge effect through the cooperation between the metal spring and the second grounding post 242. The metal spring may be fixedly connected to the circuit board 5 by welding or other processes.

[0084] In some embodiments, when there are one or more grounding posts 24, each grounding post may be connected to a matching matching circuit based on actual conditions. The matching circuit may be a circuit related to adjusting the radiation characteristics of the antenna. In one embodiment, the matching circuit has impedance matching and / or frequency tuning functions. In this application, the matching circuit can improve the effect of static electricity discharge to ground by matching impedance.

[0085] In some embodiments, the electronic device may further include a second matching circuit, through which the feed post 23 may be connected to the feed network. The second matching circuit is a circuit associated with adjusting the radiation characteristics of the antenna. In one embodiment, the second matching circuit may have similar functions to the first matching circuit, namely, the second matching circuit may have impedance matching and / or frequency tuning functions.

[0086] In some embodiments, the second matching circuit may include a second metal part. For example, as shown in FIG8 , there is a top view of the second metal part provided in an embodiment of the present application. Referring to FIG8 , the second metal part may be an independently processed and manufactured part, specifically a metal sheet structure, such as a copper sheet, with good electrical conductivity. One end of the second metal part is connected to the feed post 23, and the other end of the second metal part is connected to the feed network. For example, the second metal part may be connected to the radio frequency signal line in the feed network for transmitting L5 frequency band radio frequency signals. In the direction perpendicular to the thickness direction of the electronic device, the metal sheet of this integrated structure has a certain length dimension. For the case where there is no suitable return ground area and feeding area at the position directly opposite to the feed post 23, the metal sheet can be used to achieve the connection, thereby facilitating the design of the feed post 23 and the feeding and grounding positions to be more flexible and to meet the structural layout requirements of different electronic devices.

[0087] In some embodiments, one end of the second metal member may also be electrically connected to the feeding post 23 via a spring clip or a screw, and the other end of the second metal member may also be electrically connected to the feeding network via a spring clip or a screw.

[0088] In some embodiments, the second metal member may be an integrally formed structure, thereby facilitating the processing and manufacturing of the second metal member while ensuring structural reliability and facilitating assembly and connection.

[0089] In some embodiments, the second matching circuit may also include a matching network composed of components such as capacitors and / or inductors and / or radio frequency switches. This second matching circuit may have a similar structural form to the first matching circuit. Specifically, the capacitor, inductor, or radio frequency switch may be configured according to the feeding and radiation requirements of the antenna. For example, the capacitor or inductor may be configured separately, or both the capacitor and the inductor may be configured simultaneously and connected in series or in parallel. A radio frequency switch may also be used. The radio frequency switch may include multiple branches, each of which may be configured with a capacitor or an inductor and may be connected to the circuit through a switch. This embodiment does not impose any specific restrictions on this, thereby making the antenna design more flexible.

[0090] In some embodiments, the feed post 23 can also be connected to the feed network of the circuit board 5 through a metal spring. For example, the feed post 23 can be electrically connected to the metal spring, and the metal spring can be electrically connected to the feed network through screws or welded to the feed network.

[0091] In some embodiments, the second grounding column 242 may also be electrically connected to a ground terminal of a circuit board or a grounding metal bracket in an electronic device such as a mobile phone through a second matching circuit to achieve grounding.

[0092] In some embodiments, the equivalent inductance of the first matching circuit can be less than 30nH, and the equivalent inductance of the second matching circuit can be less than 5nH. When the equivalent inductances of the first matching circuit and the second matching circuit meet the above ranges, the electrostatic discharge of the metal layer on the receiving cavity 2 of the camera metal decorative part, etc., can be met in most electronic devices.

[0093] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An electronic device, characterized in that: include: A shell, wherein a receiving cavity is provided on the shell, at least a portion of the receiving cavity is provided with a metal layer, a feeding post and a grounding post are integrally formed on the receiving cavity, and the feeding post and the grounding post are electrically connected to the metal layer; A feeding network, the feeding network is connected to the feeding post and is used to feed the metal layer through the feeding post; A circuit board, wherein a grounding terminal of the circuit board is electrically connected to the grounding post and is used to release static electricity on the metal layer.

2. The electronic device according to claim 1, characterized in that: A first matching circuit is also included, and the grounding column is electrically connected to the grounding end through the first matching circuit.

3. The electronic device according to claim 2, characterized in that: The first matching circuit includes a first metal member, one end of the first metal member is electrically connected to the grounding column, and the other end of the first metal member is electrically connected to the grounding end.

4. The electronic device according to claim 3, characterized in that: The first metal part includes a first connecting section, a second connecting section and an extension section, the two ends of the extension section are respectively connected to the first end of the first connecting section and the first end of the second connecting section, so that the shape of the first metal part is C-shaped, the second end of the first connecting section is connected to the grounding column, and the second end of the second connecting section is connected to the grounding end.

5. The electronic device according to claim 2, characterized in that: The first matching circuit includes a capacitor and / or an inductor and / or a radio frequency switch.

6. The electronic device according to any one of claims 2 to 5, characterized in that: A second matching circuit is also included, and the feeding column is connected to the feeding network through the second matching circuit.

7. The electronic device according to claim 6, characterized in that: The second matching circuit includes a second metal member, one end of the second metal member is electrically connected to the feeding post, and the other end of the second metal member is electrically connected to the feeding network.

8. The electronic device according to claim 6, characterized in that: The second matching circuit includes a capacitor and / or an inductor and / or a radio frequency switch.

9. The electronic device according to any one of claims 1 to 8, characterized in that: A plurality of grounding posts are provided, and the plurality of grounding posts are spaced apart from each other.

10. The electronic device according to any one of claims 6 to 8, characterized in that: The grounding column comprises a first grounding column and a second grounding column, the distance between the first grounding column and the feeding column is smaller than the distance between the second grounding column and the feeding column, and the equivalent inductance value of the first grounding column is larger than the equivalent inductance value of the second grounding column.

11. The electronic device according to claim 10, characterized in that: The equivalent inductance of the first matching circuit is less than 30 nH, and the equivalent inductance of the second matching circuit is less than 5 nH.

12. The electronic device according to claim 10, characterized in that: One end of the first metal member is electrically connected to the grounding post, comprising: One end of the first metal member is electrically connected to the first grounding post.

13. The electronic device according to claim 10, characterized in that: It also includes a metal spring, and the second grounding column is connected to the grounding end through the metal spring.

14. The electronic device according to any one of claims 1 to 13, characterized in that: The accommodating cavity comprises a body and a flange, wherein the flange is connected to the edge of the body in a circumferential direction of the body; The flange is connected to the shell, and the body protrudes from a surface of the shell away from the accommodating cavity; The metal layer is arranged on a surface of the main body close to the shell.

15. The electronic device according to claim 14, characterized in that: The body is made of metal material, and the metal layer is a surface of the body close to the shell.

16. The electronic device according to claim 14, characterized in that: The body is made of plastic material, the metal layer is a metal sheet, and the metal sheet is fixed on the surface of the body close to the shell.

17. The electronic device according to claim 14, characterized in that: The accommodating cavity is a metal decorative piece for a camera, and a camera hole is arranged on the metal decorative piece for the camera.

18. The electronic device according to any one of claims 1 to 17, characterized in that: The center frequency of the radio frequency signal fed by the feeding network to the metal layer through the feeding post is 1.17 GHz.

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